How do i copy a file?

[VooDoo]

Is it possible to make a console application that copies a specified file to another drive? for example to copy C:\useless.txt to A:\

Please if anyone knows how to do it of its even possible.... reply.

Thanx

[Unregistered]

#include <stdio.h>

int main()
{
	system("copy file.txt a:\file.txt");
	return 0;
}

?

[VooDoo]

Im using Dev C++ and it gives me 1 error "implicit declaration of function 'int system(...)'

[Salem]

It's in stdlib.h

Point your cursor at the function name and press F1

[VooDoo]

now it complies without errors but then in the console window it says: The system cannot find the specified file.
I have the file.txt in the directory but it just wont work. this is the code im using

----------------------------------------------------------
#include <stdlib.h>

int main()
{

system("copy file.txt a:\file.txt");
system("PAUSE");

return 0;
}
------------------------------------------------------------

[VooDoo]

It Works Now Thanx. i just had to take the file.txt out of "a: file.txt" for future reference the code is.


#include <stdlib.h>

int main()

{
system("copy file.txt a:");

return 0;
}

[ChrisMUK]

It also works on folders.

#include <stdlib.h> 

int main() 

{ 
system("copy test a:"); 
system("PAUSE");
return 0; 
}

Thought i would let you know
Test being your folder.
Only problem i have found it doesn't copy the folder.

Also i would like to ask.... would it be possible to be able to make a program that would copy files to a CD-RW? Must be a way but i don't know how.

[Hammer]

I wrote a copy program here for someone asking about it on the C board.

It does the copy using standard C coding (expect for assuming you have backslashes as directory markers in the filenames, which obviously won't work on a *nix box). It's a bit safer than calling system, although a lot more long winded.

It's not guarenteed to be bullet proof, but it's a start.

[civix]

If youre going to use \ in a program, double it ( \\) or else it will be called an unknown escape ¿function?

[Hammer]

Originally posted by civix
If youre going to use \ in a program, double it ( \\) or else it will be called an unknown escape ¿function?

I take it you mean this line:
>if ((p = strrchr(in, '\\')) == NULL)
The thing is, I did use 2, I wouldn't post code that is that badly broken

But the board transposed it to a single slash for some reason. So I've edited the post and put 3 slashes in the source of my post, just to make it display 2 to everyone else

Thanks for pointing it out, at least I know to be careful of this in the future.

Testing : 1 slash : '\'
Testing : 2 slashes : '\\'
Testing : 3 slashes : '\\\'
Testing : 4 slashes : '\\\\'